One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,12)(4,15)(5,6)(7,8)(9,13)(10,14)(11,16)(19,22)(24,27)(29,31)(30,32)(33,34,39,36)(35,42,41,38)(37,40,46,44)(43,48,47,45)(2,8)(3,13)(5,11)(10,15)(17,18,23,28)(19,27,22,24)(20,25,26,21)(29,30,31,32)(33,34,39,36)(35,38,41,42)(37,44,46,40)(43,48,47,45)(1,3)(2,9)(4,11)(5,14)(6,15)(7,13)(8,12)(10,16)(17,19,23,22)(18,24,28,27)(20,31,26,29)(21,32,25,30)(33,35)(34,38)(36,42)(37,43)(39,41)(40,45)(44,48)(46,47)(1,4,7,14)(2,10,8,15)(3,11,13,5)(6,9,16,12)(17,20,23,26)(18,25,28,21)(19,29,22,31)(24,32,27,30)(33,36,39,34)(35,42,41,38)(37,44,46,40)(43,48,47,45)(1,5,7,11)(2,6,8,16)(3,14,13,4)(9,15,12,10)(17,21,23,25)(18,26,28,20)(19,30,22,32)(24,31,27,29)(33,37,39,46)(34,40,36,44)(35,43,41,47)(38,45,42,48)(1,6)(2,11)(3,15)(4,9)(5,8)(7,16)(10,13)(12,14)(17,22,23,19)(18,27,28,24)(20,31,26,29)(21,32,25,30)(33,38,39,42)(34,41,36,35)(37,45,46,48)(40,47,44,43)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.